Mapas de la Vía Láctea

Muddy Creek in Edgewater, Maryland is the site of a major makeover. The land around the stream has worn down. Find out what caused Muddy Creek to erode, and the many steps involved in saving it. Created in collaboration with the Smithsonian Institution, this Smithsonian Informational Text builds students' reading skills while engaging their curiosity about STEAM topics through real-world examples. It features a hands-on STEAM challenge that guides students through every step of the engineering design process, from the initial research and brainstorming sessions, through the design and testing ...

California became a territory in the United States when the Treaty of Guadalupe Hidalgo was signed in 1848. That treaty ended the Mexican War. Several days before its signing, gold was discovered at Sutter’s Mill in what is now Sacramento. The non-Native population of the territory was less than one thousand in 1848, but the gold rush increased that number to one hundred thousand by the end of 1849. The gold rush not only made many people wealthy, it brought ecologic devastation while speeding up California’s statehood. This book richly explores this interesting history.

This book looks at natural structures such as plants, animal bodies, mountains, caves, rock formations, and icebergs, the materials from which they are made, and their colors, shapes, and textures. It shows structures made by animals, such as beehives and bird nests. This wonderful book with amazing photos will encourage young readers to notice colors and shapes in nature and how they relate to the purpose of structures.

La increíble historia de la imposible caza y captura de la alegría resulta una novela paródica de calado contemporáneo, donde el humor sirve de antídoto ante la tragedia y se inspira en los sucesos de la “primavera árabe” y las experiencias de su autor, vinculado con los rebeldes libios que derrocaron al dictador Muamar el Gadafi. La historia de la búsqueda y captura de la alegría es un símbolo de los intentos de los poderosos por domeñar a los pueblos y de la imposibilidad de detener las aspiraciones humanas de conquistar un mejor futuro.

Discusses the various features of Australia, including its climate, mountains, rivers, lakes, animals, vegetation, coral reefs, flightless birds, population, and cities, and history of the Aborigines.